For the ultimate in comfort this Goose Down duvet is the perfect choice. The wonderfully soft fluffy clusters of goose down trap large pockets of air, providing effective insulation yet still retaining a light and airy feel. The small feather proportion of this duvet adds to its weight for a more 'tucked-in' feeling. The natural filled duvet also benefits from a cassette pocket construction. The All Seasons duvet is made up of two duvets that can be used separately or together; a 4.5 tog for summer, and a 9.0 tog for autumn.